Trolley-conductor device



N. J. A. WAHLBERG.

TROLLEY CONDUCTOR DEVICE.

APPLICATION FILED JULY 10. ms.

1,306,566. Patented June 10, 1919.

WITNESSES: INVEIQTOR 64. WM 4% JA. WZl/I/berg v ATTdRNEY UNITED STATESPATENT OFFICE.

NILS J. A. WAHLBERG, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TOWESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OFPENNSYLVANIA.

TROLLEY-CONDUCTOB DEVICE. r

Specification of Letters Patent. Patented J 11119 10, 1919.

Application filed July 10, 1918. Serial No. 244,272.

T 0 all whom it may concern Be it known that I, Nrns J. A. VVAI-rLBnnc,

My invention relates to devices for trolley conductors and particularlyto approaches for frogs, crossings and similar conductor attachments.

One object of my invention is to provide a device of the above indicatedcharacter that shall be simple and durable in construction andinexpensive to manufacture.

Another object of my invention is to provide an approach for atrolley-conductor device that, with its cooperating members, shallcomprise a relatively small number f parts and be readily mounted inoperative position on a conductor by the use of a simple tool, such as awrench.

In practising my invention, I provide a removable extension member for afrog or other trolley-conductor device to take up the shocks and wearincident to the passage of trolley contact members and a member pivotedto the frog or other device that may be readily moved to and from itsholding position to permit mounting of the conductor. The pivoted membersupports a screw bolt for pressing engagement with the extension memberand may be locked in position on the frog orother device in thedirection of the bolt.

Figure 1 is a top plan View of a portion of a trolley frog embodying myinvention; Fig. 2 is a side elevational View of the device shown in Fig.1, and Fig.3 is a view, taken along the line IIIIII of Fig. 2.

A frog 1, for the reception of a trolley conductor 2, only one approachend 3 of which is shown, comprises a. channel or body portion 4 ofsubstantially U-section in which the conductor 2 is disposed and towhich the latter may be attached in any suitable manner.

An extension member 5, preferably of malleable material, projecting fromthe end 3, has an inverted channel portion 6 for embracing the conductor2, a plane end face 7 that engages theend 3, and a central web portion 8isposed in the channel 4 above the conductor 2.

Oppositely and outwardly projecting lugs 9 and. 10, on the upper edgesof the channel at the'end 3, support a member 11 that is plvoted, at.one end, to the lug 10 by a pin or bolt 12 and has an overhangingportion 13, at its opposite end, to embrace the lug 9. The cooperatingfaces ofthe lug 9 and the portions 13 have the curvature of arcs struckfrom the'center of the pin 12. A'threaded bolt 14. extends through athreaded opening in the member 11 and may be advanced into rigidengagement with the web portion 8..

During the. operation of mountingthe frog in position, I the member 11is first turned about the pin 12 to a position, as indicated bybrokenlines in Fig. 1, to permit the placing of the conductor 2 in the channelThe member 5 may then be placed in position and the member 11 moved to aposition corresponding to that shown in the drawings, after which thebolt 14 maybe turned down tightly against the web portion 8. i

The portion 8 may be provided With a recess 15 to receive the end of thebolt 14 and have its bottom face shaped to fit the conductor 2. Therelation of the overhanging portion 13 With the lug 9 prevents shearingof the pin 12 and the portion 13 serves as a base between which and theportion 8 the longitudinal thrust of the bolt 14 is transmitted.

The portion 6 may be swaged or turned into the usual embracing relationwith the conductor 6, and lugs 16 may be provided to support the frog bymeans of usual guy wires, not shown.

While I have shown and described a particular form of my invention,changes may be effected therein without departing from the spirit andscope thereof as set forth in the appended claims.

I claim as my invention:

1. A trolley-conductor device comprising a body member of channel shapefor the reception of saidconductor and having outer projections at thesides thereof, an approach member embracing the conductor and having aportion in said channel, a member piv-- oted at one end to one of saidprojections and having its other end of hook shape for embracing one ofsaid projections and a screwthread'ed member extending through said,pivoted member and engaging said approach member.

2. A trolley-conductor device comprising a body member of channel shapefor the reception of said conductor and having outer projections at thesides thereof, an approach member embracing the conductor and having aportion in said channel, a member pivoted at one end to one of saidprojections and having its other end of hook shape for embracing one ofsaid projections, said pivoted member constituting a bridging memberacross said channel and being rotatable to one side to permit theinsertion of said conductor'in said channel and a sereW-tln'eaded memberextending through said pivoted member and engaging said approach member.

3. A trolley-conductor device comprising a body member-of channel shapefor there ception of said conductor, an approach member embracing theconductor and having a portion in said channel, a member pivoted at oneside of said channel and having a portion for holding engagement in onedirection With the other side of said channel and an adjustable memberextending through said pivoted member and engaging said approach memberto hold the latter in position.

4;. A trolley-conductordevice comprising a body member of channel shapefor thereception of said conductor, an approach member, a member pivotedat one side of said channel and having a portion for locking engagementin one direction with the other side of said channel and an adjustablemember disposed on said pivoted member to hold said approach member inposition.

5. A trolley-conductor device comprising a body member for the receptionof said c011- ductor, an approach member, a member pivoted to said bodymember and a member engaging said pivoted member and said approachmember to hold the latter in position. 6. A trolley-conductor devicecomprising a body member "for the reception of said conductor, anapproach member, a member pivoted to said body member and permanentlyassociated therewith, and a Il'lGHIlJGI engaging said pivoted member andsaidv approach member to hold the latter in position.

7. A trolley-conductor device comprising a body member for the receptionof said conductor, an approach member, a member relatively movably andpermanently associated witlrsaid body member and means connecting saidrelatively movable member and said approach member to hold the latter inNILS J. A. WAI-ILBERG'.

Copies of this patent may be obtained for five cents each, by addressing"the Commissioner of Patents; Washington, D. 0.

